package com.vf.framework.web.exception;

import com.vf.common.constant.HttpStatus;
import com.vf.common.core.domain.AjaxResult;
import com.vf.common.exception.DemoModeException;
import com.vf.common.exception.ServiceException;
import com.vf.common.exception.user.AuthErrorException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.ResponseEntity;
import org.springframework.security.access.AccessDeniedException;
import org.springframework.validation.BindException;
import org.springframework.validation.ObjectError;
import org.springframework.web.HttpRequestMethodNotSupportedException;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.MissingPathVariableException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import org.springframework.web.method.annotation.MethodArgumentTypeMismatchException;

import javax.servlet.http.HttpServletRequest;
import javax.validation.ConstraintViolation;
import javax.validation.ConstraintViolationException;
import javax.validation.ValidationException;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.stream.Collectors;

/**
 * 全局异常处理器
 * 
 * @author ruoyi
 */
@RestControllerAdvice
public class GlobalExceptionHandler
{
    private static final Logger log = LoggerFactory.getLogger(GlobalExceptionHandler.class);





    @ExceptionHandler(AuthErrorException.class)
    public ResponseEntity<AjaxResult> handlerAuthErrorException(AuthErrorException e){
        return new ResponseEntity<AjaxResult>(AjaxResult.error(HttpStatus.UNAUTHORIZED,e.getMessage()), org.springframework.http.HttpStatus.UNAUTHORIZED);
    }

    /**
     * 权限校验异常
     */
    @ExceptionHandler(AccessDeniedException.class)
    public AjaxResult handleAccessDeniedException(AccessDeniedException e, HttpServletRequest request)
    {
        String requestURI = request.getRequestURI();
        log.error("请求地址'{}',权限校验失败'{}'", requestURI, e.getMessage());
//        adminMailSender.sendErrorRemindMail(e);
        return AjaxResult.error(HttpStatus.FORBIDDEN, "没有权限，请联系管理员授权");
    }

    /**
     * 请求方式不支持
     */
    @ExceptionHandler(HttpRequestMethodNotSupportedException.class)
    public AjaxResult handleHttpRequestMethodNotSupported(HttpRequestMethodNotSupportedException e,
            HttpServletRequest request)
    {
        String requestURI = request.getRequestURI();
        log.error("请求地址'{}',不支持'{}'请求", requestURI, e.getMethod());
        return AjaxResult.error(e.getMessage());
    }

    /**
     * 业务异常
     */
    @ExceptionHandler(ServiceException.class)
    public ResponseEntity<AjaxResult> handleServiceException(ServiceException e, HttpServletRequest request)
    {
        log.error(e.getMessage(), e);
        Integer code = e.getCode();
        log.error("code: {}",code);
//        adminMailSender.sendErrorRemindMail(e);
        ResponseEntity<AjaxResult> responseEntity = code != null ?
                new ResponseEntity<AjaxResult>(AjaxResult.error(code, e.getMessage()), org.springframework.http.HttpStatus.valueOf(code)) :
                new ResponseEntity<AjaxResult>(AjaxResult.error(e.getMessage()), org.springframework.http.HttpStatus.INTERNAL_SERVER_ERROR);
        log.error("responseEntity: {}",responseEntity);
        return responseEntity;
    }

    /**
     * 请求路径中缺少必需的路径变量
     */
    @ExceptionHandler(MissingPathVariableException.class)
    public AjaxResult handleMissingPathVariableException(MissingPathVariableException e, HttpServletRequest request)
    {
        String requestURI = request.getRequestURI();
        log.error("请求路径中缺少必需的路径变量'{}',发生系统异常.", requestURI, e);
        return AjaxResult.error(String.format("请求路径中缺少必需的路径变量[%s]", e.getVariableName()));
    }

    /**
     * 请求参数类型不匹配
     */
    @ExceptionHandler(MethodArgumentTypeMismatchException.class)
    public AjaxResult handleMethodArgumentTypeMismatchException(MethodArgumentTypeMismatchException e, HttpServletRequest request)
    {
        String requestURI = request.getRequestURI();
        log.error("请求参数类型不匹配'{}',发生系统异常.", requestURI, e);
        return AjaxResult.error(String.format("请求参数类型不匹配，参数[%s]要求类型为：'%s'，但输入值为：'%s'", e.getName(), e.getRequiredType().getName(), e.getValue()));
    }

    /**
     * 拦截未知的运行时异常
     */
    @ExceptionHandler(RuntimeException.class)
    public AjaxResult handleRuntimeException(RuntimeException e, HttpServletRequest request)
    {
        String requestURI = request.getRequestURI();
        log.error("请求地址'{}',发生未知异常.", requestURI, e);
//        adminMailSender.sendErrorRemindMail(e);
        return AjaxResult.error(e.getMessage());
    }

    /**
     * 系统异常
     */
    @ExceptionHandler(Exception.class)
    public AjaxResult handleException(Exception e, HttpServletRequest request)
    {
        String requestURI = request.getRequestURI();
        log.error("请求地址'{}',发生系统异常.", requestURI, e);
//        adminMailSender.sendErrorRemindMail(e);
        return AjaxResult.error(e.getMessage());
    }

    /**
     * 自定义验证异常
     */
//    @ExceptionHandler(BindException.class)
//    public AjaxResult handleBindException(BindException e)
//    {
//        log.error(e.getMessage(), e);
//        String message = e.getAllErrors().get(0).getDefaultMessage();
//        return AjaxResult.error(message);
//    }

    /**
     * 自定义验证异常
     */
//    @ExceptionHandler(MethodArgumentNotValidException.class)
//    public Object handleMethodArgumentNotValidException(MethodArgumentNotValidException e)
//    {
//        log.error(e.getMessage(), e);
//        String message = e.getBindingResult().getFieldError().getDefaultMessage();
//        return AjaxResult.error(message);
//    }

    /**
     * 演示模式异常
     */
    @ExceptionHandler(DemoModeException.class)
    public AjaxResult handleDemoModeException(DemoModeException e)
    {
        return AjaxResult.error("演示模式，不允许操作");
    }

    //参数校验异常拦截
    @ExceptionHandler(value = {BindException.class, ValidationException.class, MethodArgumentNotValidException.class})
    public ResponseEntity<AjaxResult> handleValidatedException(Exception e) {
        AjaxResult  result = null;
        if (e instanceof  MethodArgumentNotValidException) {
            // 强制类型转换
            MethodArgumentNotValidException ex =(MethodArgumentNotValidException)  e;
            result = AjaxResult.error("参数校验异常",
                    ex.getBindingResult().getAllErrors().stream()
                            .map(ObjectError::getDefaultMessage)
                            .collect(Collectors.toList())
            );
        } else  if (e instanceof ConstraintViolationException){
            ConstraintViolationException ex = (ConstraintViolationException) e;
            result = AjaxResult.error("参数校验异常",
                    ex.getConstraintViolations().stream()
                            .map(ConstraintViolation::getMessage)
                            .collect(Collectors.toList())
            );
        }else  if (e instanceof BindException) {
            BindException ex = (BindException ) e;
            result = AjaxResult.error("参数校验异常",
                    ex.getAllErrors().stream()
                            .map(ObjectError::getDefaultMessage)
                            .collect(Collectors.toList())
            );
        }
        return new ResponseEntity<AjaxResult>(result, org.springframework.http.HttpStatus.BAD_REQUEST);
    }
}
